ci2 starts bisection 2025-06-26 11:04:06.650322915 +0000 UTC m=+149862.099927142
bisecting fixing commit since f15d97df5afae16f40ecef942031235d1c6ba14f
building syzkaller on aeb6ec69196736aadb8538796e2db8c80a499c98
ensuring issue is reproducible on original commit f15d97df5afae16f40ecef942031235d1c6ba14f
testing commit f15d97df5afae16f40ecef942031235d1c6ba14f gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: 919a298f44b8d5e1ed6c79ebc3351cfc8a7fe46130b311fc7853a8da0fc85a57
all runs: crashed: INFO: task hung in btree_write_buffer_flush_seq
representative crash: INFO: task hung in btree_write_buffer_flush_seq, types: [HANG]
check whether we can drop unnecessary instrumentation
disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK], they are not needed
testing commit f15d97df5afae16f40ecef942031235d1c6ba14f gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: 48ac013dbacd1a2b195ca6b0c765a9fbcae5a387aba51b783a788d6e87878062
all runs: crashed: INFO: task hung in btree_write_buffer_flush_seq
representative crash: INFO: task hung in btree_write_buffer_flush_seq, types: [HANG]
the bug reproduces without the instrumentation
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
kconfig minimization: base=4088 full=8322 leaves diff=2140
split chunks (needed=false): <2140>
split chunk #0 of len 2140 into 5 parts
testing without sub-chunk 1/5
disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK], they are not needed
testing commit f15d97df5afae16f40ecef942031235d1c6ba14f gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: 6278f12d9e873cef6acc3687674183b4af6d4b3c2fb8790aa267f9e6bcf642f8
all runs: OK
false negative chance: 0.000
testing without sub-chunk 2/5
disabling configs for [LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG KASAN], they are not needed
testing commit f15d97df5afae16f40ecef942031235d1c6ba14f gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
failed building f15d97df5afae16f40ecef942031235d1c6ba14f: ld.lld: error: undefined symbol: devm_drm_of_get_bridge
testing without sub-chunk 3/5
disabling configs for [LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG KASAN], they are not needed
testing commit f15d97df5afae16f40ecef942031235d1c6ba14f gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: 9c194ff700df3e0a4aad20f83e00414c388aa97a28ba8f5ad206adde307ab76b
all runs: crashed: INFO: task hung in btree_write_buffer_flush_seq
representative crash: INFO: task hung in btree_write_buffer_flush_seq, types: [HANG]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit f15d97df5afae16f40ecef942031235d1c6ba14f gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: ca23f02e0b7d1655e13b27f892359a6c710cdaf798ba0d0ca171933e9f1bdaa7
all runs: crashed: INFO: task hung in btree_write_buffer_flush_seq
representative crash: INFO: task hung in btree_write_buffer_flush_seq, types: [HANG]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG], they are not needed
testing commit f15d97df5afae16f40ecef942031235d1c6ba14f gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: 914e9d9392522758cb16961c880c5668243fffcd02615c43775a9a3006a6ea10
all runs: crashed: INFO: task hung in btree_write_buffer_flush_seq
representative crash: INFO: task hung in btree_write_buffer_flush_seq, types: [HANG]
the chunk can be dropped
minimized to 856 configs; suspects: [6LOWPAN 6LOWPAN_GHC_EXT_HDR_DEST 6LOWPAN_GHC_EXT_HDR_FRAG 6LOWPAN_GHC_EXT_HDR_HOP 6LOWPAN_GHC_EXT_HDR_ROUTE 6LOWPAN_GHC_ICMPV6 6LOWPAN_GHC_UDP 6LOWPAN_NHC 6LOWPAN_NHC_DEST 6LOWPAN_NHC_FRAGMENT 6LOWPAN_NHC_HOP 6LOWPAN_NHC_IPV6 6LOWPAN_NHC_MOBILITY 6LOWPAN_NHC_ROUTING 6LOWPAN_NHC_UDP 6PACK 842_COMPRESS 842_DECOMPRESS 9P_FSCACHE 9P_FS_POSIX_ACL 9P_FS_SECURITY ACORN_PARTITION ACORN_PARTITION_ADFS ACORN_PARTITION_CUMANA ACORN_PARTITION_EESOX ACORN_PARTITION_ICS ACORN_PARTITION_POWERTEC ACORN_PARTITION_RISCIX ACPI_NFIT ACPI_NHLT ACPI_PLATFORM_PROFILE ADFS_FS AFFS_FS AFS_FS AFS_FSCACHE AF_KCM AF_RXRPC AF_RXRPC_IPV6 AIX_PARTITION AMD_SFH_HID AMIGA_PARTITION ANDROID_BINDER_IPC ANON_VMA_NAME APERTURE_HELPERS APPLE_MFI_FASTCHARGE AR5523 ARCH_ENABLE_MEMORY_HOTREMOVE ARCH_ENABLE_THP_MIGRATION ARCH_HAS_CRC32 ARCH_HAS_CRC64 ARCH_HAS_CRC_T10DIF ARCH_HAS_USER_SHADOW_STACK ARCH_SUPPORTS_HUGE_PFNMAP ARCH_SUPPORTS_PMD_PFNMAP ARCH_SUPPORTS_PUD_PFNMAP ARCH_WANT_PMD_MKWRITE ASM_MODVERSIONS ASUS_TF103C_DOCK ASUS_WMI ASYNC_CORE ASYNC_MEMCPY ASYNC_PQ ASYNC_RAID6_RECOV ASYNC_TX_DMA ASYNC_XOR AS_SHA1_NI AS_SHA256_NI AS_TPAUSE ATARI_PARTITION ATA_GENERIC ATA_OVER_ETH ATH10K ATH10K_CE ATH10K_LEDS ATH10K_PCI ATH10K_USB ATH11K ATH6KL ATH6KL_USB ATH9K ATH9K_AHB ATH9K_BTCOEX_SUPPORT ATH9K_CHANNEL_CONTEXT ATH9K_COMMON ATH9K_COMMON_DEBUG ATH9K_COMMON_SPECTRAL ATH9K_DEBUGFS ATH9K_DYNACK ATH9K_HTC ATH9K_HTC_DEBUGFS ATH9K_HW ATH9K_PCI ATH9K_PCOEM ATH9K_RFKILL ATH_COMMON ATM ATM_BR2684 ATM_CLIP ATM_DRIVERS ATM_LANE ATM_MPOA ATM_TCP AUXILIARY_BUS AX25 AX25_DAMA_SLAVE AX88796B_PHY BAREUDP BATMAN_ADV BATMAN_ADV_BATMAN_V BATMAN_ADV_BLA BATMAN_ADV_DAT BATMAN_ADV_MCAST BATMAN_ADV_NC BCACHE BCACHEFS_DEBUG BCACHEFS_ERASURE_CODING BCACHEFS_FS BCACHEFS_POSIX_ACL BCACHEFS_QUOTA BCACHEFS_SIX_OPTIMISTIC_SPIN BCMA BCMA_HOST_PCI_POSSIBLE BEFS_FS BFQ_CGROUP_DEBUG BFQ_GROUP_IOSCHED BFS_FS BIG_KEYS BLK_CGROUP_PUNT_BIO BLK_CGROUP_RWSTAT BLK_DEV_BSGLIB BLK_DEV_INTEGRITY BLK_DEV_NBD BLK_DEV_NULL_BLK BLK_DEV_NULL_BLK_FAULT_INJECTION BLK_DEV_NVME BLK_DEV_PMEM BLK_DEV_RAM BLK_DEV_RNBD BLK_DEV_RNBD_CLIENT BLK_DEV_THROTTLING BLK_DEV_ZONED BLK_ICQ BLK_INLINE_ENCRYPTION BLK_INLINE_ENCRYPTION_FALLBACK BLK_MQ_PCI BLK_MQ_VIRTIO BLK_WBT BLK_WBT_MQ BONDING BOOT_VESA_SUPPORT BPF_EVENTS BPF_JIT BPF_JIT_ALWAYS_ON BPF_JIT_DEFAULT_ON BPF_LSM BPF_PRELOAD BPF_PRELOAD_UMD BPF_STREAM_PARSER BPF_SYSCALL BPQETHER BRIDGE BRIDGE_CFM BRIDGE_EBT_802_3 BRIDGE_EBT_AMONG BRIDGE_EBT_ARP BRIDGE_EBT_ARPREPLY BRIDGE_EBT_BROUTE BRIDGE_EBT_DNAT BRIDGE_EBT_IP BRIDGE_EBT_IP6 BRIDGE_EBT_LIMIT BRIDGE_EBT_LOG BRIDGE_EBT_MARK BRIDGE_EBT_MARK_T BRIDGE_EBT_NFLOG BRIDGE_EBT_PKTTYPE BRIDGE_EBT_REDIRECT BRIDGE_EBT_SNAT BRIDGE_EBT_STP BRIDGE_EBT_T_FILTER BRIDGE_EBT_T_NAT BRIDGE_EBT_VLAN BRIDGE_IGMP_SNOOPING BRIDGE_MRP BRIDGE_NF_EBTABLES BRIDGE_NF_EBTABLES_LEGACY BRIDGE_VLAN_FILTERING BSD_DISKLABEL BSD_PROCESS_ACCT_V3 BT BTRFS_ASSERT BTRFS_FS BTRFS_FS_POSIX_ACL BTRFS_FS_REF_VERIFY BTT BT_6LOWPAN BT_ATH3K BT_BCM BT_BNEP BT_BNEP_MC_FILTER BT_BNEP_PROTO_FILTER BT_BREDR BT_HCIBCM203X BT_HCIBFUSB BT_HCIBPA10X BT_HCIBTUSB BT_HCIBTUSB_AUTOSUSPEND BT_HCIBTUSB_BCM BT_HCIBTUSB_MTK BT_HCIBTUSB_POLL_SYNC BT_HCIBTUSB_RTL BT_HCIUART BT_HCIUART_3WIRE BT_HCIUART_AG6XX BT_HCIUART_BCSP BT_HCIUART_H4 BT_HCIUART_LL BT_HCIUART_MRVL BT_HCIUART_QCA BT_HCIUART_SERDEV BT_HCIVHCI BT_INTEL BT_LE BT_LEDS BT_LE_L2CAP_ECRED BT_MRVL BT_MRVL_SDIO BT_MSFTEXT BT_MTK BT_MTKSDIO BT_MTKUART BT_QCA BT_RFCOMM BT_RFCOMM_TTY BT_RTL CACHEFILES CAIF CAIF_DEBUG CAIF_DRIVERS CAIF_NETDEV CAIF_TTY CAIF_USB CAIF_VIRTIO CAN CAN_8DEV_USB CAN_BCM CAN_CALC_BITTIMING CAN_DEV CAN_EMS_USB CAN_ESD_USB CAN_ETAS_ES58X CAN_F81604 CAN_GS_USB CAN_GW CAN_IFI_CANFD CAN_ISOTP CAN_J1939 CAN_KVASER_USB CAN_MCBA_USB CAN_NETLINK CAN_PEAK_USB CAN_RAW CAN_RX_OFFLOAD CAN_SLCAN CAN_UCAN CAN_VCAN CAN_VXCAN CARL9170 CARL9170_HWRNG CARL9170_LEDS CARL9170_WPC CC_CAN_LINK_STATIC CEC_CORE CEPH_FS CEPH_FSCACHE CEPH_FS_POSIX_ACL CEPH_LIB CEPH_LIB_USE_DNS_RESOLVER CFG80211 CFG80211_CRDA_SUPPORT CFG80211_DEBUGFS CFG80211_DEFAULT_PS CFG80211_REQUIRE_SIGNED_REGDB CFG80211_USE_KERNEL_REGDB_KEYS CFG80211_WEXT CFS_BANDWIDTH CGROUP_BPF CHARGER_BQ24190 CHARGER_ISP1704 CHR_DEV_ST CIFS CIFS_ALLOW_INSECURE_LEGACY CIFS_DEBUG CIFS_DFS_UPCALL CIFS_FSCACHE CIFS_POSIX CIFS_SMB_DIRECT CIFS_SWN_UPCALL CIFS_UPCALL CIFS_XATTR CLOSURES CLS_U32_MARK CLS_U32_PERF CMA CMA_SIZE_SEL_MAX CMDLINE_PARTITION COMEDI COMEDI_DT9812 COMEDI_NI_USB6501 COMEDI_USBDUX COMEDI_USBDUXFAST COMEDI_USBDUXSIGMA COMEDI_USB_DRIVERS COMEDI_VMK80XX COMMON_CLK COMPAT_NETLINK_MESSAGES COUNTER CRAMFS CRAMFS_BLOCKDEV CRAMFS_MTD CRC64 CRC64_ARCH CRC8 CRC_ITU_T CRC_T10DIF CRC_T10DIF_ARCH CRYPTO_842 CRYPTO_ADIANTUM CRYPTO_AEGIS128 CRYPTO_AEGIS128_AESNI_SSE2 CRYPTO_AES_NI_INTEL CRYPTO_AES_TI CRYPTO_ANSI_CPRNG CRYPTO_ANUBIS CRYPTO_ARC4 CRYPTO_ARCH_HAVE_LIB_BLAKE2S CRYPTO_ARCH_HAVE_LIB_CHACHA CRYPTO_ARCH_HAVE_LIB_CURVE25519 CRYPTO_ARCH_HAVE_LIB_POLY1305 CRYPTO_ARIA CRYPTO_ARIA_AESNI_AVX_X86_64 CRYPTO_BLAKE2B CRYPTO_BLAKE2S_X86 CRYPTO_BLOWFISH CRYPTO_BLOWFISH_COMMON CRYPTO_BLOWFISH_X86_64 CRYPTO_CAMELLIA CRYPTO_CAMELLIA_AESNI_AVX2_X86_64 CRYPTO_CAMELLIA_AESNI_AVX_X86_64 CRYPTO_CAMELLIA_X86_64 CRYPTO_CAST5 CRYPTO_CAST5_AVX_X86_64 CRYPTO_CAST6 CRYPTO_CAST6_AVX_X86_64 CRYPTO_CAST_COMMON CRYPTO_CHACHA20 CRYPTO_CHACHA20POLY1305 CRYPTO_CHACHA20_X86_64 CRYPTO_CRC32C CRYPTO_CRYPTD CRYPTO_CTS CRYPTO_CURVE25519 CRYPTO_CURVE25519_X86 CRYPTO_DEFLATE CRYPTO_DES CRYPTO_DES3_EDE_X86_64 CRYPTO_DEV_CCP CRYPTO_DEV_CCP_DD CRYPTO_DEV_PADLOCK CRYPTO_DEV_PADLOCK_AES CRYPTO_DEV_PADLOCK_SHA CRYPTO_DEV_QAT CRYPTO_DEV_QAT_C3XXX CRYPTO_DEV_QAT_C3XXXVF CRYPTO_DEV_QAT_C62X CRYPTO_DEV_QAT_C62XVF CRYPTO_DEV_QAT_DH895xCC CRYPTO_DEV_QAT_DH895xCCVF CRYPTO_DEV_VIRTIO CRYPTO_DH CRYPTO_DRBG_CTR CRYPTO_DRBG_HASH CRYPTO_ECDH CRYPTO_ECRDSA CRYPTO_ENGINE CRYPTO_ESSIV CRYPTO_FCRYPT CRYPTO_GHASH_CLMUL_NI_INTEL CRYPTO_HCTR2 CRYPTO_HKDF CRYPTO_KDF800108_CTR CRYPTO_KHAZAD CRYPTO_KPP CRYPTO_KRB5 CRYPTO_KRB5ENC CRYPTO_LIB_ARC4 CRYPTO_LIB_CHACHA CRYPTO_LIB_CHACHA20POLY1305 CRYPTO_LIB_CHACHA_GENERIC CRYPTO_LIB_CHACHA_INTERNAL CRYPTO_LIB_CURVE25519 CRYPTO_LIB_CURVE25519_GENERIC CRYPTO_LIB_CURVE25519_INTERNAL CRYPTO_LIB_DES CRYPTO_LIB_POLY1305 CRYPTO_LIB_POLY1305_GENERIC CRYPTO_LIB_POLY1305_INTERNAL CRYPTO_LRW CRYPTO_LZ4 CRYPTO_LZ4HC CRYPTO_MANAGER_DISABLE_TESTS CRYPTO_MICHAEL_MIC CRYPTO_NHPOLY1305 CRYPTO_NHPOLY1305_AVX2 CRYPTO_NHPOLY1305_SSE2 CRYPTO_NULL CRYPTO_NULL2 CRYPTO_PCBC CRYPTO_PCRYPT CRYPTO_POLY1305 CRYPTO_POLY1305_X86_64 CRYPTO_POLYVAL CRYPTO_POLYVAL_CLMUL_NI CRYPTO_RMD160 CRYPTO_SEED CRYPTO_SERPENT CRYPTO_SERPENT_AVX2_X86_64 CRYPTO_SERPENT_AVX_X86_64 CRYPTO_SERPENT_SSE2_X86_64 CRYPTO_SHA1_SSSE3 CRYPTO_SHA256_SSSE3 CRYPTO_SHA512_SSSE3 CRYPTO_SIMD CRYPTO_SM3 CRYPTO_SM3_AVX_X86_64 CRYPTO_SM4 CRYPTO_SM4_AESNI_AVX2_X86_64 CRYPTO_SM4_AESNI_AVX_X86_64 CRYPTO_SM4_GENERIC CRYPTO_STREEBOG CRYPTO_TEA CRYPTO_TWOFISH CRYPTO_TWOFISH_AVX_X86_64 CRYPTO_TWOFISH_COMMON CRYPTO_TWOFISH_X86_64 CRYPTO_TWOFISH_X86_64_3WAY CRYPTO_USER CRYPTO_USER_API CRYPTO_USER_API_AEAD CRYPTO_USER_API_ENABLE_OBSOLETE CRYPTO_USER_API_HASH CRYPTO_USER_API_RNG CRYPTO_USER_API_SKCIPHER CRYPTO_WP512 CRYPTO_XCBC CRYPTO_XCTR CRYPTO_XTS CRYPTO_XXHASH CRYPTO_ZSTD CUSE CYPRESS_FIRMWARE DAMON DAMON_PADDR DAMON_RECLAIM DAMON_VADDR DAX DCA DCB DEBUG_VFS DEFAULT_CODEL DEVICE_MIGRATION DEVICE_PRIVATE DEV_COREDUMP DEV_DAX DLM DLN2_ADC DMABUF_HEAPS DMABUF_HEAPS_CMA DMABUF_HEAPS_SYSTEM DMABUF_MOVE_NOTIFY DMA_CMA DMA_ENGINE_RAID DM_AUDIT DM_BIO_PRISON DM_BUFIO DM_CACHE DM_CACHE_SMQ DM_CLONE DM_CRYPT DM_FLAKEY DM_INTEGRITY DM_MULTIPATH DM_MULTIPATH_QL DM_MULTIPATH_ST DM_PERSISTENT_DATA DM_RAID DM_SNAPSHOT DM_THIN_PROVISIONING DM_UEVENT DM_VERITY DM_VERITY_FEC DM_WRITECACHE DM_ZONED DRAGONRISE_FF DRM DRM_AUX_BRIDGE DRM_BOCHS DRM_BRIDGE DRM_BUDDY DRM_CIRRUS_QEMU DRM_CLIENT DRM_CLIENT_DEFAULT_FBDEV DRM_CLIENT_LIB DRM_CLIENT_SELECTION DRM_CLIENT_SETUP DRM_DEBUG_MM DRM_DISPLAY_DP_AUX_BUS DRM_DISPLAY_DP_HELPER DRM_DISPLAY_DSC_HELPER DRM_DISPLAY_HDCP_HELPER DRM_DISPLAY_HDMI_HELPER DRM_DISPLAY_HELPER DRM_FBDEV_EMULATION DRM_GEM_SHMEM_HELPER DRM_GM12U320 DRM_GUD DRM_I915 DRM_I915_CAPTURE_ERROR DRM_I915_COMPRESS_ERROR DRM_I915_USERPTR DRM_KMS_HELPER DRM_MIPI_DSI DRM_PANEL DRM_PANEL_BRIDGE DRM_PANEL_EDP DRM_PANEL_ORIENTATION_QUIRKS DRM_SIMPLEDRM DRM_TTM DRM_TTM_HELPER DRM_UDL DRM_VGEM DRM_VIRTIO_GPU DRM_VIRTIO_GPU_KMS DRM_VKMS DRM_VMWGFX DUMMY DVB_AF9013 DVB_AF9033 DVB_AS102 DVB_AS102_FE DVB_B2C2_FLEXCOP DVB_B2C2_FLEXCOP_USB DVB_CORE DVB_DIB3000MB DVB_DIB3000MC DVB_EC100 DVB_GP8PSK_FE DVB_RTL2830 DVB_RTL2832 DVB_RTL2832_SDR DVB_TEST_DRIVERS DVB_TTUSB_BUDGET DVB_TTUSB_DEC DVB_USB DVB_USB_A800 DVB_USB_AF9005 DVB_USB_AF9005_REMOTE DVB_USB_AF9015 DVB_USB_AF9035 DVB_USB_ANYSEE DVB_USB_AU6610 DVB_USB_AZ6007 DVB_USB_AZ6027 DVB_USB_CE6230 DVB_USB_CINERGY_T2 DVB_USB_CXUSB DVB_USB_CXUSB_ANALOG DVB_USB_DIB0700 DVB_USB_DIB3000MC DVB_USB_DIBUSB_MB DVB_USB_DIBUSB_MC DVB_USB_DIGITV DVB_USB_DTT200U DVB_USB_DTV5100 DVB_USB_DVBSKY DVB_USB_DW2102 DVB_USB_EC168 DVB_USB_GL861 DVB_USB_GP8PSK DVB_USB_LME2510 DVB_USB_M920X DVB_USB_MXL111SF DVB_USB_NOVA_T_USB2 DVB_USB_OPERA1 DVB_USB_PCTV452E DVB_USB_RTL28XXU DVB_USB_TECHNISAT_USB2 DVB_USB_TTUSB2 DVB_USB_UMT_010 DVB_USB_V2 DVB_USB_VP702X DVB_USB_VP7045 DVB_USB_ZD1301 DVB_VIDTV DVB_ZL10353 ECRYPT_FS ECRYPT_FS_MESSAGING EDAC EFS_FS ENCRYPTED_KEYS EQUALIZER EROFS_FS EROFS_FS_POSIX_ACL EROFS_FS_SECURITY EROFS_FS_XATTR EROFS_FS_ZIP EVM EVM_ADD_XATTRS EVM_ATTR_FSUUID EVM_EXTRA_SMACK_XATTRS EXFAT_FS EXPORTFS_BLOCK_OPS EXT3_FS EXT3_FS_POSIX_ACL EXT3_FS_SECURITY EXTCON EXTCON_INTEL_CHT_WC EXTCON_PTN5150 EXTCON_USBC_TUSB320 F2FS_CHECK_FS F2FS_FAULT_INJECTION F2FS_FS F2FS_FS_COMPRESSION F2FS_FS_LZ4 F2FS_FS_LZ4HC F2FS_FS_LZO F2FS_FS_LZORLE F2FS_FS_POSIX_ACL F2FS_FS_SECURITY F2FS_FS_XATTR F2FS_FS_ZSTD F2FS_STAT_FS FANOTIFY FANOTIFY_ACCESS_PERMISSIONS FB FB_CFB_COPYAREA FB_CFB_FILLRECT FB_CFB_IMAGEBLIT FB_CORE FB_DEFERRED_IO FB_DEVICE FB_IOMEM_FOPS FB_IOMEM_HELPERS FB_NOTIFY FB_SYSMEM_FOPS FB_SYSMEM_HELPERS FB_SYSMEM_HELPERS_DEFERRED FB_SYS_COPYAREA FB_SYS_FILLRECT FB_SYS_IMAGEBLIT FB_TILEBLITTING FB_VESA FB_VGA16 FB_VIRTUAL FDDI FIREWIRE FIREWIRE_NET FIREWIRE_OHCI FIREWIRE_SBP2 FONT_8x16 FONT_8x8 FONT_SUPPORT FRAMEBUFFER_CONSOLE FRAMEBUFFER_CONSOLE_DETECT_PRIMARY FRAMEBUFFER_CONSOLE_ROTATION FSCACHE FS_DAX FS_DAX_PMD FS_ENCRYPTION FS_ENCRYPTION_ALGS FS_STACK FS_VERITY FS_VERITY_BUILTIN_SIGNATURES FTL FUSE_DAX FUSE_FS FW_LOADER_COMPRESS FW_LOADER_PAGED_BUF FW_LOADER_SYSFS FW_LOADER_USER_HELPER FW_LOADER_USER_HELPER_FALLBACK GACT_PROB GARP GENDWARFKSYMS GENERIC_PHY GET_FREE_REGION GFS2_FS GFS2_FS_LOCKING_DLM GNSS GNSS_USB GOOGLE_COREBOOT_TABLE GOOGLE_FIRMWARE GOOGLE_MEMCONSOLE GOOGLE_MEMCONSOLE_COREBOOT GOOGLE_VPD GPIOLIB GPIOLIB_IRQCHIP GPIO_ACPI GPIO_DLN2 GPIO_LJCA GPIO_VIPERBOARD GREENASIA_FF GREYBUS GREYBUS_BRIDGED_PHY GREYBUS_ES2 GREYBUS_HID GREYBUS_USB GTP GUEST_PERF_EVENTS GVE HAMRADIO HAS_LTO_CLANG HAVE_ARCH_NODE_DEV_GROUP HAVE_ARCH_USERFAULTFD_MINOR HAVE_ARCH_USERFAULTFD_WP HAVE_BOOTMEM_INFO_NODE HAVE_CLK_PREPARE HAVE_KVM_CPU_RELAX_INTERCEPT HAVE_KVM_DIRTY_RING HAVE_KVM_DIRTY_RING_ACQ_REL HAVE_KVM_DIRTY_RING_TSO HAVE_KVM_IRQCHIP HAVE_KVM_IRQ_BYPASS HAVE_KVM_IRQ_ROUTING HAVE_KVM_MSI HAVE_KVM_NO_POLL HAVE_KVM_PFNCACHE HAVE_KVM_PM_NOTIFIER HAVE_KVM_READONLY_MEM HAVE_SCHED_AVG_IRQ HDLC HDLC_CISCO HDLC_FR HDLC_PPP HDLC_RAW HDLC_RAW_ETH HDLC_X25 HDMI HFSPLUS_FS HFS_FS HID_ACCUTOUCH HID_ACRUX HID_ACRUX_FF HID_ALPS HID_APPLEIR HID_ASUS HID_AUREAL HID_BATTERY_STRENGTH HID_BETOP_FF HID_BIGBEN_FF HID_CMEDIA HID_CORSAIR HID_COUGAR HID_CP2112 HID_CREATIVE_SB0540 HID_DRAGONRISE HID_ELAN HID_ELECOM HID_ELO HID_EMS_FF HID_EVISION HID_FT260 HID_GEMBIRD HID_GFRM HID_GLORIOUS HID_GOOGLE_STADIA_FF HID_GREENASIA HID_GT683R HID_HOLTEK HID_ICADE HID_JABRA HID_KEYTOUCH HID_KYE HID_LCPOWER HID_LED HID_LENOVO HID_LETSKETCH HID_LOGITECH HID_LOGITECH_DJ HID_LOGITECH_HIDPP HID_MACALLY HID_MAGICMOUSE HID_MALTRON HID_MAYFLASH HID_MCP2200 HID_MCP2221 HID_MEGAWORLD_FF HID_MULTITOUCH HID_NTI HID_ORTEK HID_PENMOUNT HID_PICOLCD HID_PICOLCD_BACKLIGHT HID_PICOLCD_CIR HID_PICOLCD_FB HID_PICOLCD_LCD HID_PICOLCD_LEDS HID_PLANTRONICS HID_PRIMAX HID_PRODIKEYS HID_PXRC HID_RAZER HID_RETRODE HID_RMI HID_ROCCAT HID_SAITEK HID_SEMITEK HID_SENSOR_ACCEL_3D HID_SENSOR_ALS HID_SENSOR_CUSTOM_INTEL_HINGE HID_SENSOR_CUSTOM_SENSOR HID_SENSOR_DEVICE_ROTATION HID_SENSOR_GYRO_3D HID_SENSOR_HUB HID_SENSOR_HUMIDITY HID_SENSOR_IIO_COMMON HID_SENSOR_IIO_TRIGGER HID_SENSOR_INCLINOMETER_3D HID_SENSOR_MAGNETOMETER_3D HID_SENSOR_PRESS HID_SENSOR_PROX HID_SENSOR_TEMP HID_SIGMAMICRO HID_SPEEDLINK HID_STEELSERIES HID_THINGM HID_TIVO HID_TOPRE HID_TWINHAN HID_U2FZERO HID_UCLOGIC HID_UDRAW_PS3 HID_VIEWSONIC HID_VIVALDI HID_VIVALDI_COMMON HID_VRC2 HID_WACOM HID_WALTOP HID_WIIMOTE HID_XIAOMI HID_XINMO HID_ZYDACRON HMM_MIRROR HOLTEK_FF HOTPLUG_PCI_PCIE HPET_MMAP HPET_MMAP_DEFAULT HPFS_FS I2C_ALGOBIT I2C_CHARDEV I2C_CP2615 I2C_DESIGNWARE_CORE I2C_DESIGNWARE_PLATFORM I2C_DIOLAN_U2C I2C_DLN2 I2C_HID_ACPI I2C_HID_CORE I2C_HID_OF I2C_LJCA I2C_MUX I2C_MUX_REG I2C_ROBOTFUZZ_OSIF I2C_SI4713 I2C_SLAVE I2C_SLAVE_EEPROM I2C_TINY_USB I2C_VIPERBOARD IEEE802154 IEEE802154_6LOWPAN IEEE802154_ATUSB IEEE802154_DRIVERS IEEE802154_HWSIM IEEE802154_NL802154_EXPERIMENTAL IEEE802154_SOCKET IFB IIO IIO_BUFFER IIO_KFIFO_BUF IIO_TRIGGER IIO_TRIGGERED_BUFFER IKCONFIG IKCONFIG_PROC IMA IMA_APPRAISE IMA_APPRAISE_MODSIG IMA_DEFAULT_HASH_SHA256 IMA_LSM_RULES IMA_MEASURE_ASYMMETRIC_KEYS IMA_NG_TEMPLATE IMA_QUEUE_EARLY_BOOT_KEYS IMA_READ_POLICY IMA_WRITE_POLICY INET6_ESPINTCP INET6_ESP_OFFLOAD INET6_IPCOMP INET6_TUNNEL INET6_XFRM_TUNNEL INET_AH INET_DIAG INET_DIAG_DESTROY INET_ESP INET_ESPINTCP INET_ESP_OFFLOAD INET_IPCOMP INET_MPTCP_DIAG INET_RAW_DIAG INET_SCTP_DIAG INET_TCP_DIAG INET_UDP_DIAG INET_XFRM_TUNNEL INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_ADDR_TRANS_CONFIGFS INFINIBAND_IPOIB INFINIBAND_IPOIB_CM INFINIBAND_IPOIB_DEBUG INFINIBAND_ISER INFINIBAND_ON_DEMAND_PAGING INFINIBAND_RTRS INFINIBAND_RTRS_CLIENT INFINIBAND_SRP INFINIBAND_USER_ACCESS INFINIBAND_USER_MAD INFINIBAND_USER_MEM INPUT_ATI_REMOTE2 INPUT_CM109 INPUT_IMS_PCU INPUT_JOYDEV INPUT_KEYSPAN_REMOTE INPUT_LEDS INPUT_MOUSEDEV INPUT_MOUSEDEV_PSAUX INPUT_POWERMATE INPUT_UINPUT INPUT_YEALINK INTEGRITY INTEGRITY_ASYMMETRIC_KEYS INTEGRITY_AUDIT INTEGRITY_SIGNATURE INTEGRITY_TRUSTED_KEYRING INTEL_CHTWC_INT33FE INTEL_IDMA64 INTEL_IOATDMA INTEL_IOMMU_DEFAULT_ON INTEL_IOMMU_SVM INTEL_ISHTP_ECLITE INTEL_ISH_FIRMWARE_DOWNLOADER INTEL_ISH_HID INTEL_SOC_PMIC_CHTWC INTERVAL_TREE_SPAN_ITER IOMMUFD IOMMUFD_DRIVER IOMMUFD_DRIVER_CORE IOMMUFD_TEST IOSCHED_BFQ IO_URING_ZCRX IP6_NF_MATCH_AH IP6_NF_MATCH_EUI64 IP6_NF_MATCH_FRAG IP6_NF_MATCH_HL IP6_NF_MATCH_MH IP6_NF_MATCH_OPTS IP6_NF_MATCH_RPFILTER IP6_NF_MATCH_RT IP6_NF_MATCH_SRH IP6_NF_NAT IP6_NF_RAW IP6_NF_SECURITY IP6_NF_TARGET_HL IP6_NF_TARGET_MASQUERADE IP6_NF_TARGET_NPT IP6_NF_TARGET_SYNPROXY IPV6_FOU IPV6_FOU_TUNNEL IPV6_GRE IPV6_ILA IPV6_MIP6 IPV6_MROUTE IPV6_MROUTE_MULTIPLE_TABLES IPV6_MULTIPLE_TABLES IPV6_OPTIMISTIC_DAD IPV6_PIMSM_V2 IPV6_ROUTER_PREF IPV6_ROUTE_INFO IPV6_RPL_LWTUNNEL IPV6_SEG6_BPF IPV6_SEG6_HMAC IPV6_SEG6_LWTUNNEL IPV6_SIT_6RD IPV6_SUBTREES IPV6_TUNNEL IPV6_VTI IPVLAN IPVLAN_L3S IPVTAP IP_FIB_TRIE_STATS IP_MROUTE_MULTIPLE_TABLES IP_NF_ARPFILTER IP_NF_ARPTABLES IP_NF_ARP_MANGLE IP_NF_MATCH_AH IP_NF_MATCH_ECN IP_NF_MATCH_RPFILTER IP_NF_MATCH_TTL IP_NF_RAW IP_NF_SECURITY IP_NF_TARGET_ECN IP_NF_TARGET_NETMAP IP_NF_TARGET_REDIRECT IP_NF_TARGET_SYNPROXY IP_NF_TARGET_TTL IP_ROUTE_CLASSID IP_SCTP IP_SET IP_SET_BITMAP_IP IP_SET_BITMAP_IPMAC IP_SET_BITMAP_PORT IP_SET_HASH_IP IP_SET_HASH_IPMAC IP_SET_HASH_IPMARK IP_SET_HASH_IPPORT IRQ_TIME_ACCOUNTING LAPB LCD_CLASS_DEVICE LEDS_CLASS_MULTICOLOR LIBNVDIMM MAC80211 MAC80211_DEBUGFS MAC80211_LEDS MAC802154 MEDIA_DIGITAL_TV_SUPPORT MEDIA_RADIO_SUPPORT MEDIA_SDR_SUPPORT MEDIA_SUPPORT MEDIA_TEST_SUPPORT MEDIA_USB_SUPPORT MEMORY_HOTPLUG MEMORY_HOTREMOVE MFD_DLN2 MFD_VIPERBOARD MMC MODVERSIONS MPTCP MTD NETFILTER_ADVANCED NET_ACT_GACT NET_ACT_MIRRED NET_CLS_U32 NET_IPGRE_DEMUX NET_SCH_DEFAULT NFT_COMPAT NFT_COMPAT_ARP NFT_FWD_NETDEV NF_TABLES NF_TABLES_ARP NF_TABLES_NETDEV PAGE_POOL PARTITION_ADVANCED RADIO_ADAPTERS RADIO_SI4713 RAS RC_CORE REGULATOR RFKILL SERIAL_DEV_BUS SND SOUND STAGING TLS TLS_DEVICE TRANSPARENT_HUGEPAGE TRUSTED_KEYS TYPEC TYPEC_MUX_PI3USB30532 USB_GADGET USB_LJCA USB_PHY USB_ROLES_INTEL_XHCI USB_ROLE_SWITCH VIDEO_DEV VIRTIO_FS VLAN_8021Q WAN WANT_COMPAT_NETLINK_MESSAGES WEXT_CORE WIRELESS WLAN WLAN_VENDOR_ATH ZONE_DEVICE]
disabling configs for [ATOMIC_SLEEP LEAK UBSAN BUG KASAN LOCKDEP], they are not needed
testing current HEAD ee88bddf7f2f5d1f1da87dd7bedc734048b70e88
testing commit ee88bddf7f2f5d1f1da87dd7bedc734048b70e88 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: 01260e57cf8a2c0ae2fe26f054dfc169c27b5356a784de904f6391d65fceb9bc
run #0: crashed: INFO: task hung in btree_write_buffer_flush_seq
run #1: crashed: INFO: task hung in btree_write_buffer_flush_seq
run #2: crashed: INFO: task hung in btree_write_buffer_flush_seq
run #3: crashed: INFO: task hung in btree_write_buffer_flush_seq
run #4: crashed: INFO: task hung in __closure_sync
run #5: crashed: INFO: task hung in __closure_sync
run #6: crashed: INFO: task hung in __closure_sync
run #7: crashed: INFO: task hung in __closure_sync
run #8: crashed: INFO: task hung in __closure_sync
run #9: crashed: INFO: task hung in __closure_sync
representative crash: INFO: task hung in btree_write_buffer_flush_seq, types: [HANG]
crash still not fixed/happens on the oldest tested release
revisions tested: 7, total time: 2h3m51.524225193s (build: 55m47.123895997s, test: 54m22.550930341s)
crash still not fixed or there were kernel test errors
commit msg: Merge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
crash: INFO: task hung in btree_write_buffer_flush_seq
INFO: task bch-reclaim/loo:4296 blocked for more than 143 seconds.
Not tainted 6.16.0-rc3-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:bch-reclaim/loo state:D stack:13656 pid:4296 tgid:4296 ppid:2 task_flags:0x200840 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5396 [inline]
__schedule+0x75b/0xc20 kernel/sched/core.c:6785
__schedule_loop kernel/sched/core.c:6863 [inline]
schedule+0xac/0x140 kernel/sched/core.c:6878
schedule_preempt_disabled+0x32/0x60 kernel/sched/core.c:6935
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x46b/0xb00 kernel/locking/mutex.c:747
btree_write_buffer_flush_seq+0x5d7/0x660 fs/bcachefs/btree_write_buffer.c:572
bch2_btree_write_buffer_journal_flush+0x49/0xa0 fs/bcachefs/btree_write_buffer.c:589
journal_flush_pins+0x3a1/0x4e0 fs/bcachefs/journal_reclaim.c:598
__bch2_journal_reclaim+0x284/0x410 fs/bcachefs/journal_reclaim.c:726
bch2_journal_reclaim_thread+0x6c/0x160 fs/bcachefs/journal_reclaim.c:768
kthread+0x200/0x230 kernel/kthread.c:464
ret_from_fork+0x9a/0x170 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Showing all locks held in the system:
2 locks held by kworker/u8:1/14:
1 lock held by ksoftirqd/0/15:
#0: ffff888237c2d2d8 (&rq->__lock){....}-{2:2}, at: raw_spin_rq_lock_nested+0x20/0x70 kernel/sched/core.c:606
1 lock held by khungtaskd/31:
#0: ffffffff847e80b0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#0: ffffffff847e80b0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
#0: ffffffff847e80b0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x2e/0x100 kernel/locking/lockdep.c:6770
3 locks held by kworker/u9:1/2054:
#0: ffff88810af2f148 ((wq_completion)hci3){....}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88810af2f148 ((wq_completion)hci3){....}-{0:0}, at: process_scheduled_works+0x27f/0x5e0 kernel/workqueue.c:3321
#1: ffffc90002e87e48 ((work_completion)(&hdev->cmd_sync_work)){....}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc90002e87e48 ((work_completion)(&hdev->cmd_sync_work)){....}-{0:0}, at: process_scheduled_works+0x29f/0x5e0 kernel/workqueue.c:3321
#2: ffff888179218d80 (&hdev->req_lock){....}-{3:3}, at: hci_cmd_sync_work+0xc2/0x1a0 net/bluetooth/hci_sync.c:331
2 locks held by getty/2195:
#0: ffff888105fe20a0 (&tty->ldisc_sem){....}-{0:0}, at: tty_ldisc_ref_wait+0x20/0x40 drivers/tty/tty_ldisc.c:243
#1: ffffc90003b032f0 (&ldata->atomic_read_lock){....}-{3:3}, at: n_tty_read+0x1c3/0x6e0 drivers/tty/n_tty.c:2222
3 locks held by syz-executor/3545:
#0: ffff888106385418 (sb_writers#13){....}-{0:0}, at: do_unlinkat+0xe3/0x2e0 fs/namei.c:4642
#1: ffff888173804388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:161 [inline]
#1: ffff888173804388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_read_lock include/linux/srcu.h:253 [inline]
#1: ffff888173804388 (&c->btree_trans_barrier){....}-{0:0}, at: bch2_trans_srcu_lock+0x2f/0x80 fs/bcachefs/btree_iter.c:3255
#2: ffff8881738266d0 (&c->gc_lock){....}-{3:3}, at: bch2_btree_update_start+0x24e/0x990 fs/bcachefs/btree_update_interior.c:1211
4 locks held by bch-reclaim/loo/3916:
#0: ffff88817384af28 (&j->reclaim_lock){....}-{3:3}, at: bch2_journal_reclaim_thread+0x60/0x160 fs/bcachefs/journal_reclaim.c:767
#1: ffff888173804730 (&wb->flushing.lock){....}-{3:3}, at: btree_write_buffer_flush_seq+0x5d7/0x660 fs/bcachefs/btree_write_buffer.c:572
#2: ffff888173804388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:161 [inline]
#2: ffff888173804388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_read_lock include/linux/srcu.h:253 [inline]
#2: ffff888173804388 (&c->btree_trans_barrier){....}-{0:0}, at: bch2_trans_srcu_lock+0x2f/0x80 fs/bcachefs/btree_iter.c:3255
#3: ffff8881738266d0 (&c->gc_lock){....}-{3:3}, at: bch2_btree_update_start+0x24e/0x990 fs/bcachefs/btree_update_interior.c:1211
3 locks held by syz-executor/3924:
#0: ffff888103f57418 (sb_writers#13){....}-{0:0}, at: do_unlinkat+0xe3/0x2e0 fs/namei.c:4642
#1: ffff888179b04388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:161 [inline]
#1: ffff888179b04388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_read_lock include/linux/srcu.h:253 [inline]
#1: ffff888179b04388 (&c->btree_trans_barrier){....}-{0:0}, at: bch2_trans_srcu_lock+0x2f/0x80 fs/bcachefs/btree_iter.c:3255
#2: ffff888179b266d0 (&c->gc_lock){....}-{3:3}, at: bch2_btree_update_start+0x24e/0x990 fs/bcachefs/btree_update_interior.c:1211
3 locks held by bch-reclaim/loo/4296:
#0: ffff888179b4af28 (&j->reclaim_lock){....}-{3:3}, at: bch2_journal_reclaim_thread+0x60/0x160 fs/bcachefs/journal_reclaim.c:767
#1: ffff888179b04388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:161 [inline]
#1: ffff888179b04388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_read_lock include/linux/srcu.h:253 [inline]
#1: ffff888179b04388 (&c->btree_trans_barrier){....}-{0:0}, at: __bch2_trans_get+0x262/0x3d0 fs/bcachefs/btree_iter.c:3440
#2: ffff888179b04730 (&wb->flushing.lock){....}-{3:3}, at: btree_write_buffer_flush_seq+0x5d7/0x660 fs/bcachefs/btree_write_buffer.c:572
3 locks held by bch-copygc/loop/4297:
#0: ffff888179b04730 (&wb->flushing.lock){....}-{3:3}, at: btree_write_buffer_flush_seq+0x5d7/0x660 fs/bcachefs/btree_write_buffer.c:572
#1: ffff888179b04388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:161 [inline]
#1: ffff888179b04388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_read_lock include/linux/srcu.h:253 [inline]
#1: ffff888179b04388 (&c->btree_trans_barrier){....}-{0:0}, at: bch2_trans_srcu_lock+0x2f/0x80 fs/bcachefs/btree_iter.c:3255
#2: ffff888179b266d0 (&c->gc_lock){....}-{3:3}, at: bch2_btree_update_start+0x24e/0x990 fs/bcachefs/btree_update_interior.c:1211
3 locks held by syz-executor/4303:
#0: ffff88810f6f5418 (sb_writers#13){....}-{0:0}, at: do_unlinkat+0xe3/0x2e0 fs/namei.c:4642
#1: ffff888161c84388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:161 [inline]
#1: ffff888161c84388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_read_lock include/linux/srcu.h:253 [inline]
#1: ffff888161c84388 (&c->btree_trans_barrier){....}-{0:0}, at: bch2_trans_srcu_lock+0x2f/0x80 fs/bcachefs/btree_iter.c:3255
#2: ffff888161ca66d0 (&c->gc_lock){....}-{3:3}, at: bch2_btree_update_start+0x24e/0x990 fs/bcachefs/btree_update_interior.c:1211
4 locks held by bch-reclaim/loo/4675:
#0: ffff888161ccaf28 (&j->reclaim_lock){....}-{3:3}, at: bch2_journal_reclaim_thread+0x60/0x160 fs/bcachefs/journal_reclaim.c:767
#1: ffff888161c84730 (&wb->flushing.lock){....}-{3:3}, at: btree_write_buffer_flush_seq+0x5d7/0x660 fs/bcachefs/btree_write_buffer.c:572
#2: ffff888161c84388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:161 [inline]
#2: ffff888161c84388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_read_lock include/linux/srcu.h:253 [inline]
#2: ffff888161c84388 (&c->btree_trans_barrier){....}-{0:0}, at: bch2_trans_srcu_lock+0x2f/0x80 fs/bcachefs/btree_iter.c:3255
#3: ffff888161ca66d0 (&c->gc_lock){....}-{3:3}, at: bch2_btree_update_start+0x24e/0x990 fs/bcachefs/btree_update_interior.c:1211
3 locks held by syz-executor/4679:
#0: ffff888109fe5418 (sb_writers#13){....}-{0:0}, at: do_unlinkat+0xe3/0x2e0 fs/namei.c:4642
#1: ffff88815fd04388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:161 [inline]
#1: ffff88815fd04388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_read_lock include/linux/srcu.h:253 [inline]
#1: ffff88815fd04388 (&c->btree_trans_barrier){....}-{0:0}, at: bch2_trans_srcu_lock+0x2f/0x80 fs/bcachefs/btree_iter.c:3255
#2: ffff88815fd266d0 (&c->gc_lock){....}-{3:3}, at: bch2_btree_update_start+0x24e/0x990 fs/bcachefs/btree_update_interior.c:1211
4 locks held by bch-reclaim/loo/5052:
#0: ffff88815fd4af28 (&j->reclaim_lock){....}-{3:3}, at: bch2_journal_reclaim_thread+0x60/0x160 fs/bcachefs/journal_reclaim.c:767
#1: ffff88815fd04730 (&wb->flushing.lock){....}-{3:3}, at: btree_write_buffer_flush_seq+0x5d7/0x660 fs/bcachefs/btree_write_buffer.c:572
#2: ffff88815fd04388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:161 [inline]
#2: ffff88815fd04388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_read_lock include/linux/srcu.h:253 [inline]
#2: ffff88815fd04388 (&c->btree_trans_barrier){....}-{0:0}, at: bch2_trans_srcu_lock+0x2f/0x80 fs/bcachefs/btree_iter.c:3255
#3: ffff88815fd266d0 (&c->gc_lock){....}-{3:3}, at: bch2_btree_update_start+0x24e/0x990 fs/bcachefs/btree_update_interior.c:1211
3 locks held by syz-executor/5056:
#0: ffff888236f2c418 (sb_writers#13){....}-{0:0}, at: do_unlinkat+0xe3/0x2e0 fs/namei.c:4642
#1: ffff88815cd84388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:161 [inline]
#1: ffff88815cd84388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_read_lock include/linux/srcu.h:253 [inline]
#1: ffff88815cd84388 (&c->btree_trans_barrier){....}-{0:0}, at: bch2_trans_srcu_lock+0x2f/0x80 fs/bcachefs/btree_iter.c:3255
#2: ffff88815cda66d0 (&c->gc_lock){....}-{3:3}, at: bch2_btree_update_start+0x24e/0x990 fs/bcachefs/btree_update_interior.c:1211
4 locks held by bch-reclaim/loo/5429:
#0: ffff88815cdcaf28 (&j->reclaim_lock){....}-{3:3}, at: bch2_journal_reclaim_thread+0x60/0x160 fs/bcachefs/journal_reclaim.c:767
#1: ffff88815cd84730 (&wb->flushing.lock){....}-{3:3}, at: btree_write_buffer_flush_seq+0x5d7/0x660 fs/bcachefs/btree_write_buffer.c:572
#2: ffff88815cd84388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:161 [inline]
#2: ffff88815cd84388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_read_lock include/linux/srcu.h:253 [inline]
#2: ffff88815cd84388 (&c->btree_trans_barrier){....}-{0:0}, at: bch2_trans_srcu_lock+0x2f/0x80 fs/bcachefs/btree_iter.c:3255
#3: ffff88815cda66d0 (&c->gc_lock){....}-{3:3}, at: bch2_btree_update_start+0x24e/0x990 fs/bcachefs/btree_update_interior.c:1211
3 locks held by syz-executor/5433:
#0: ffff8881790a4418 (sb_writers#13){....}-{0:0}, at: do_unlinkat+0xe3/0x2e0 fs/namei.c:4642
#1: ffff888177f84388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:161 [inline]
#1: ffff888177f84388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_read_lock include/linux/srcu.h:253 [inline]
#1: ffff888177f84388 (&c->btree_trans_barrier){....}-{0:0}, at: bch2_trans_srcu_lock+0x2f/0x80 fs/bcachefs/btree_iter.c:3255
#2: ffff888177fa66d0 (&c->gc_lock){....}-{3:3}, at: bch2_btree_update_start+0x24e/0x990 fs/bcachefs/btree_update_interior.c:1211
4 locks held by bch-reclaim/loo/5806:
#0: ffff888177fcaf28 (&j->reclaim_lock){....}-{3:3}, at: bch2_journal_reclaim_thread+0x60/0x160 fs/bcachefs/journal_reclaim.c:767
#1: ffff888177f84730 (&wb->flushing.lock){....}-{3:3}, at: btree_write_buffer_flush_seq+0x5d7/0x660 fs/bcachefs/btree_write_buffer.c:572
#2: ffff888177f84388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:161 [inline]
#2: ffff888177f84388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_read_lock include/linux/srcu.h:253 [inline]
#2: ffff888177f84388 (&c->btree_trans_barrier){....}-{0:0}, at: bch2_trans_srcu_lock+0x2f/0x80 fs/bcachefs/btree_iter.c:3255
#3: ffff888177fa66d0 (&c->gc_lock){....}-{3:3}, at: bch2_btree_update_start+0x24e/0x990 fs/bcachefs/btree_update_interior.c:1211
3 locks held by syz-executor/5810:
#0: ffff888159db4418 (sb_writers#13){....}-{0:0}, at: do_unlinkat+0xe3/0x2e0 fs/namei.c:4642
#1: ffff888156184388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:161 [inline]
#1: ffff888156184388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_read_lock include/linux/srcu.h:253 [inline]
#1: ffff888156184388 (&c->btree_trans_barrier){....}-{0:0}, at: bch2_trans_srcu_lock+0x2f/0x80 fs/bcachefs/btree_iter.c:3255
#2: ffff8881561a66d0 (&c->gc_lock){....}-{3:3}, at: bch2_btree_update_start+0x24e/0x990 fs/bcachefs/btree_update_interior.c:1211
3 locks held by bch-reclaim/loo/6183:
#0: ffff8881561caf28 (&j->reclaim_lock){....}-{3:3}, at: bch2_journal_reclaim_thread+0x60/0x160 fs/bcachefs/journal_reclaim.c:767
#1: ffff888156184388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:161 [inline]
#1: ffff888156184388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_read_lock include/linux/srcu.h:253 [inline]
#1: ffff888156184388 (&c->btree_trans_barrier){....}-{0:0}, at: __bch2_trans_get+0x262/0x3d0 fs/bcachefs/btree_iter.c:3440
#2: ffff888156184730 (&wb->flushing.lock){....}-{3:3}, at: btree_write_buffer_flush_seq+0x5d7/0x660 fs/bcachefs/btree_write_buffer.c:572
3 locks held by bch-copygc/loop/6184:
#0: ffff888156184730 (&wb->flushing.lock){....}-{3:3}, at: btree_write_buffer_flush_seq+0x5d7/0x660 fs/bcachefs/btree_write_buffer.c:572
#1: ffff888156184388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:161 [inline]
#1: ffff888156184388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_read_lock include/linux/srcu.h:253 [inline]
#1: ffff888156184388 (&c->btree_trans_barrier){....}-{0:0}, at: bch2_trans_srcu_lock+0x2f/0x80 fs/bcachefs/btree_iter.c:3255
#2: ffff8881561a66d0 (&c->gc_lock){....}-{3:3}, at: bch2_btree_update_start+0x24e/0x990 fs/bcachefs/btree_update_interior.c:1211
3 locks held by syz-executor/6187:
#0: ffff88810a727418 (sb_writers#13){....}-{0:0}, at: do_unlinkat+0xe3/0x2e0 fs/namei.c:4642
#1: ffff888153584388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:161 [inline]
#1: ffff888153584388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_read_lock include/linux/srcu.h:253 [inline]
#1: ffff888153584388 (&c->btree_trans_barrier){....}-{0:0}, at: bch2_trans_srcu_lock+0x2f/0x80 fs/bcachefs/btree_iter.c:3255
#2: ffff8881535a66d0 (&c->gc_lock){....}-{3:3}, at: bch2_btree_update_start+0x24e/0x990 fs/bcachefs/btree_update_interior.c:1211
4 locks held by bch-reclaim/loo/6560:
#0: ffff8881535caf28 (&j->reclaim_lock){....}-{3:3}, at: bch2_journal_reclaim_thread+0x60/0x160 fs/bcachefs/journal_reclaim.c:767
#1: ffff888153584730 (&wb->flushing.lock){....}-{3:3}, at: btree_write_buffer_flush_seq+0x5d7/0x660 fs/bcachefs/btree_write_buffer.c:572
#2: ffff888153584388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:161 [inline]
#2: ffff888153584388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_read_lock include/linux/srcu.h:253 [inline]
#2: ffff888153584388 (&c->btree_trans_barrier){....}-{0:0}, at: bch2_trans_srcu_lock+0x2f/0x80 fs/bcachefs/btree_iter.c:3255
#3: ffff8881535a66d0 (&c->gc_lock){....}-{3:3}, at: bch2_btree_update_start+0x24e/0x990 fs/bcachefs/btree_update_interior.c:1211
3 locks held by syz-executor/6565:
#0: ffff88816a240418 (sb_writers#13){....}-{0:0}, at: do_unlinkat+0xe3/0x2e0 fs/namei.c:4642
#1: ffff88814e404388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:161 [inline]
#1: ffff88814e404388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_read_lock include/linux/srcu.h:253 [inline]
#1: ffff88814e404388 (&c->btree_trans_barrier){....}-{0:0}, at: bch2_trans_srcu_lock+0x2f/0x80 fs/bcachefs/btree_iter.c:3255
#2: ffff88814e4266d0 (&c->gc_lock){....}-{3:3}, at: bch2_btree_update_start+0x24e/0x990 fs/bcachefs/btree_update_interior.c:1211
4 locks held by bch-reclaim/loo/6938:
#0: ffff88814e44af28 (&j->reclaim_lock){....}-{3:3}, at: bch2_journal_reclaim_thread+0x60/0x160 fs/bcachefs/journal_reclaim.c:767
#1: ffff88814e404730 (&wb->flushing.lock){....}-{3:3}, at: btree_write_buffer_flush_seq+0x5d7/0x660 fs/bcachefs/btree_write_buffer.c:572
#2: ffff88814e404388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:161 [inline]
#2: ffff88814e404388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_read_lock include/linux/srcu.h:253 [inline]
#2: ffff88814e404388 (&c->btree_trans_barrier){....}-{0:0}, at: bch2_trans_srcu_lock+0x2f/0x80 fs/bcachefs/btree_iter.c:3255
#3: ffff88814e4266d0 (&c->gc_lock){....}-{3:3}, at: bch2_btree_update_start+0x24e/0x990 fs/bcachefs/btree_update_interior.c:1211
3 locks held by syz-executor/6942:
#0: ffff88816a167418 (sb_writers#13){....}-{0:0}, at: do_unlinkat+0xe3/0x2e0 fs/namei.c:4642
#1: ffff88814b804388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:161 [inline]
#1: ffff88814b804388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_read_lock include/linux/srcu.h:253 [inline]
#1: ffff88814b804388 (&c->btree_trans_barrier){....}-{0:0}, at: bch2_trans_srcu_lock+0x2f/0x80 fs/bcachefs/btree_iter.c:3255
#2: ffff88814b8266d0 (&c->gc_lock){....}-{3:3}, at: bch2_btree_update_start+0x24e/0x990 fs/bcachefs/btree_update_interior.c:1211
4 locks held by bch-reclaim/loo/7315:
#0: ffff88814b84af28 (&j->reclaim_lock){....}-{3:3}, at: bch2_journal_reclaim_thread+0x60/0x160 fs/bcachefs/journal_reclaim.c:767
#1: ffff88814b804730 (&wb->flushing.lock){....}-{3:3}, at: btree_write_buffer_flush_seq+0x5d7/0x660 fs/bcachefs/btree_write_buffer.c:572
#2: ffff88814b804388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:161 [inline]
#2: ffff88814b804388 (&c->btree_trans_barrier){....}-{0:0}, at: srcu_read_lock include/linux/srcu.h:253 [inline]
#2: ffff88814b804388 (&c->btree_trans_barrier){....}-{0:0}, at: bch2_trans_srcu_lock+0x2f/0x80 fs/bcachefs/btree_iter.c:3255
#3: ffff88814b8266d0 (&c->gc_lock){....}-{3:3}, at: bch2_btree_update_start+0x24e/0x990 fs/bcachefs/btree_update_interior.c:1211
1 lock held by udevd/7323:
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc3-syzkaller #0 PREEMPT(undef)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
dump_stack_lvl+0xa2/0xf0 lib/dump_stack.c:120
nmi_cpu_backtrace+0x109/0x170 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x8e/0x140 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:158 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:307 [inline]
watchdog+0x604/0x630 kernel/hung_task.c:470
kthread+0x200/0x230 kernel/kthread.c:464
ret_from_fork+0x9a/0x170 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 7720 Comm: syz.2.54 Not tainted 6.16.0-rc3-syzkaller #0 PREEMPT(undef)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:its_return_thunk+0x0/0x10 arch/x86/lib/retpoline.S:412
Code: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 e9 8b e7 ce fd cc
RSP: 0018:ffffc90012f5fad0 EFLAGS: 00000296
RAX: 0000000080000000 RBX: ffff88823fff8988 RCX: 0000000000000000
RDX: ffff8882b2174000 RSI: ffffffff842fa2f6 RDI: 00000000ffffffff
RBP: 0000000000402dc0 R08: 0000000000000000 R09: 0000000000000007
R10: 0000000000000000 R11: ffffffff813c0a30 R12: ffff88810af23480
R13: ffffffff816b09bc R14: ffff88823fff8980 R15: 0000000000001008
FS: 0000555575366500(0000) GS:ffff8882b2174000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555575379588 CR3: 000000014d8a0000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
obj_cgroup_charge_account+0xc5/0x2f0 mm/memcontrol.c:3108
__memcg_slab_post_alloc_hook+0x217/0x450 mm/memcontrol.c:3192
memcg_slab_post_alloc_hook mm/slub.c:2180 [inline]
slab_post_alloc_hook mm/slub.c:4158 [inline]
slab_alloc_node mm/slub.c:4197 [inline]
__do_kmalloc_node mm/slub.c:4327 [inline]
__kvmalloc_node_noprof+0x40a/0x5a0 mm/slub.c:5015
futex_hash_allocate+0xee/0x510 kernel/futex/core.c:1601
copy_process+0x9f7/0x1140 kernel/fork.c:2290
kernel_clone+0xf7/0x3f0 kernel/fork.c:2599
__do_sys_clone3 kernel/fork.c:2903 [inline]
__se_sys_clone3+0x1c9/0x1e0 kernel/fork.c:2882
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x8f/0x250 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff92cdc31c9
Code: bf 08 00 48 8d 3d dc bf 08 00 e8 e2 28 f6 ff 66 90 b8 ea ff ff ff 48 85 ff 74 2c 48 85 d2 74 27 49 89 c8 b8 b3 01 00 00 0f 05 <48> 85 c0 7c 18 74 01 c3 31 ed 48 83 e4 f0 4c 89 c7 ff d2 48 89 c7
RSP: 002b:00007fff45e3af98 EFLAGS: 00000202 ORIG_RAX: 00000000000001b3
RAX: ffffffffffffffda RBX: 00007ff92cd455b0 RCX: 00007ff92cdc31c9
RDX: 00007ff92cd455b0 RSI: 0000000000000058 RDI: 00007fff45e3afe0
RBP: 00007ff92dbe06c0 R08: 00007ff92dbe06c0 R09: 00007fff45e3b0c7
R10: 0000000000000008 R11: 0000000000000202 R12: ffffffffffffffa8
R13: 0000000000000016 R14: 00007fff45e3afe0 R15: 00007fff45e3b0c8